22561663014561 has 16 divisors (see below), whose sum is σ = 32850761511168. Its totient is φ = 13659653024400.

The previous prime is 22561663014511. The next prime is 22561663014563. The reversal of 22561663014561 is 16541036616522.

It is a happy number.

It is not a de Polignac number, because 22561663014561 - 2⁹ = 22561663014049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22561663014561.

It is not an unprimeable number, because it can be changed into a prime (22561663014563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352020871 + ... + 352084956.

It is an arithmetic number, because the mean of its divisors is an integer number (2053172594448).

Almost surely, 2^{22561663014561} is an apocalyptic number.

It is an amenable number.

22561663014561 is a deficient number, since it is larger than the sum of its proper divisors (10289098496607).

22561663014561 is a wasteful number, since it uses less digits than its factorization.

22561663014561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704106812.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 22561663014561 in words is "twenty-two trillion, five hundred sixty-one billion, six hundred sixty-three million, fourteen thousand, five hundred sixty-one".